Main St '63 Reverb - License Key

This is a license key for Main St '63 Spring. It is not the plugin.

The plugin is free. Download it at [mainstaudiolabs.github.io](https://mainstaudiolabs.github.io) — VST3 for Windows, macOS and Linux, plus Audio Unit on macOS. It is complete: nothing is locked, limited, time-limited or watermarked, with or without a key. Try it first. If it is not for you, you have lost nothing.

What the key does. It removes the five-second window that appears the first time you open the plugin in a session. That is the whole difference.

What you actually get. A key by email and on your order page. It works offline, it never expires, and it survives reinstalling, updating and changing computers. One key, this plugin, forever.

Why this exists. Main St '63 Spring is a circuit-level model of the 1963 outboard spring reverb unit — the 12AT7 input and the Dwell, the 6V6 driving the tank's coil, two dispersive springs and the recovery stage, every tube solved sample by sample and checked against a hundred impulse responses measured on a real unit. It is given away because that is how it should be, and this is the way to say thanks if it earns its place in your music.